Process of making plaster-board.



G. R. ,KING. PROCESS OF MAKING PLA STER BOAR D. APPLICATION FILED JUNE 8, 1909. RENEWED JUNE 25, 1912.

1,036, 1 24 Patented Aug. 20, 1912.

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U M w Em f) HE IHII III II? G. R. KING. I PRQGESS OF MAKING PLASTER BOARD. AIPBLIOATION FILED mum, 1909. RENEWED mm: 25, 1912.

Patented Aug. 20, 1912.

5 SHEETS-SHEET 2.

mwe/weo (:1 *1 v r C L L G. R. KING.

PROCESS OF MAKING PLASTER BOARD. APPLICATION FILED TUNE B, 1909-. RENEWED JUNE 25, 1912. 1,036,124.

Patented Aug. 20, 1912.

5 SHEETS-SHEET 3.

de c 2351;; h "SS Heine V G. R. KING. PROCESS OF MAKING PLASTER BOARD. APPLICATION J'ILFD JUNE 8, 1909. RENEWED JUNE 25,1912.

1,036,124. Patented-Ai1g.20,1912.

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V v I fl 60 QXH/tvwomzo 5 14/00 Moz 'G. R.- KING. PROCESS OF MAKING PLASTER BOARD. APPLICATION FILED JUNE 8, 1909. RE NEWED JUNE 25, 1912.

' 1,036,124, Patented Aug. 20, 1912.

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=- ran. stairs- FAEENT irri GEORGE E. ENG, OF NEW YORK, N. Y., ASSIGNOR TO J. B. KING 6?: 00., A CORPGRETION OF NEW YORK. I

PROGESS OF MAKING PMSTER-BOAQD.

igosesree.

, Application filed June a, 1e09, Serial No. 500,911.

To all whom it may concern:

Be it known that I, GEORGE E. KING, a citizen of the United States, and resident of I the city of New York, county of Richmond; and State of New York, have made a new and useful Improvement in the Process of Making Plaster-Board, of which-the following is a specification.

The objectof my invention is to automatically form a plaster board in continuous sheets which may be readily severed into the desired'lengths and then removed from the machine. This object is accomplished by my present invention, .anembodiment of one form of apparatus. for carrying out which is herein illustrated.

For a more particular description of my invention, reference is-to be had to the accompanying drawings forming a part here of, in which, I

Figurel is a plan view of my improved machine. Fig. 2 is a side elevation of the same. Fig. 3 is an enlarged side elevation of aportion of the same. Fig. 4 is a sectional view taken on the line H of Fig. 3,

looking. in the direction of the arrows. Fig... 5 is an enlarged endelevation of the plaster.

making part of the apparatus, and shows a scraper for cleaning a belt thereof. Fig. 6 isa sect-ional'view taken on the line 66 of Fig. 5, looking in the direction of the ar rows. Fig. 7 is a side elevation of the plaster making portion of the apparatus. Fig.

' 8 is a plan View of the structure shown in Fig. 7. Fig. 9 is an enlarged sectional view taken on the line 91-9 of Fig. 7, looking in the direction or the arrows. Flg. 10 is an enlarged elevation of a portion of the struc ture shown in Fig. 7, portions being shown in section. Fig. 11 is a sectional view of the machine for making the plaster board, and shows mechanism for the edges soas to free the board from the machine except that it rests thereon. Fig. 12 is a longitudinal sec tion of a portion of the plaster board machine. Fig. 13 is a sectional'view taken on the line 13T13 of Fig. 12, looking in the Figs. 14 and 15 are side and and views respectively, of a paper roll and the parts connected therewith. 16, 1.7 and 18 are detailed views showing the mechanism for severing the straw board into slabs oi definite length, Fig. 17 showing the structure on the right Specification of Letters Patent.

.1 tented Aug. 2%, Renewed June 25, 1912. serial No. 705,864:.

oi Fig. 16. Fig-19 shows a modified mixer for the plaster and Water.

Throughout the various views of the ing means 6, which is also preferably an endless belt conveyer identical with the part 4,

a second paper supplying means '2, which is preferably substantially the same as the means 8, compressing means 8 and 9, a second carrier 10, a severing devicell, of any suitable form, not necessarily a swing saw as shown, and a table with a carrier 12 for removing the plaster board.

The endless carrier 2, and the parts connected therewith embody the principal part of my invention.v The carrler is provided ateach end with a roller 13 mounted in suitable t'rame work 14, on which are also [mounted the lower rollers 15 and the upper rollers 16, the upper rollers carrying .the

weight of the conveyor and its load and the lower" rollers 15 serving merely to sustain the weight of the'conveyer while inoperative on its return run. R

The rollers 15 (Fig. 4) are reduced in diameter at their endsli so as to receive the v thickened edges 18' of the conveyor 2. These edges 18 are-made of the same thickness as the plaster board and run parallel, and separated from each other the width of the board. The conveyer is made suflicientlylong to permit the devices above mentioned to be placed in fproper relation thereto. It maybe lon er i desired and may be run at any desire speed, providing that the plaster does not set until after the boardis passed from under the rollers 8.

The paper supplying means: 3 consists of anordlnary paper roll 19 mounted in the conventional mannerand suitable standards I 20 adjacent to the end oftheconveyer 2, as

shown in Figs. 1 and 2, so that the from the: roll 19' is placed open the as soon as it takes itsupper run.

The plaster is appliediin a proper condiaper it 2 tion and placed on the paper from the roll Figs. 7, 8, 9 and 10. That is, some rollers 24 are mounted each on ahorizontal axis, and others 25 are mounted each on an inclined axis as *to elevate the edges of the belt and make a'suitable water-holding receptacle' of the same throughout a portion of its upper run. 'As shown in Figs. 7 and 10 the last two rollers 23 are elevated'and the first roller 25 has its lower edges depressed below the roller 24 at the extreme left of these figures. This construction makes the belt. form what might be called a trough during a portion of its upper run. The lower and rearward run of the belt 4 is over the lower rollers 26 which are mounted in any suitable manner in the frame 22.

Immediately above the rear roller 21 and supported by any suitable means, notshown,

is a trough 27, provided with a suit-able spiral conveyer 28 in the trough 27 in the conventional'manner and over the medial line of the belt 4 is a spout 29 running from front of the spout 2,9 is a rack 30 mounted by any suitable means, not shown, and provided with a serrated lower edge 31 which is in use.

has the function of distributing the plaster evenly over the belt 4. The belt under the rack 30 is practically horizontal and a little beyond this on its forward run it is made suitable source of water supply. This pipe 32 is preferably vertically dis osed' in its upper portion and it is also provided with a Boat valve 33 which will govern the water flowing on to the belt 4 when the apparatus The'float 33 then rises on the water in the ,troughdike portion of the belt 4. This trough-like portion is made sulficiently long to hydrate-the plaster of Paris,

and passes from this in. athoroughly hy drated condition-over the forward roller 21 and clings to the belt over this roller until it strikes a scraper 35 which -.consists of a horizontal plate 36 mounted on abellcrank' r ea-124 paperfro-m the roll 19v on the conveyer 2, and is liquid enough to settle on this paper between the guides 18 at each side of the conveyer 2. This plaster then passes on the paper as above described, to the means 5 for supplying fiber, which fiber is distrib uted over theplaster evenly and with the required thickness. This means 5 may be a table or anything else by means of which the fiber may be fed by hand or machinery and over the plaster. The belt2 with its contents then passes under the secondplaster carrying belt numbered 6 which with its cooperating parts is identical with the belt 4 and its cooperating parts so that a further descriptionis unnecessary. Under this belt From The paper-supplying means consists of a a paper roll 41 identical with the paper roll 19 and the paper 42 from this roll passes under. the roll 43 which is parallel with the conveying rollers 16, and this roller 43 distributes the paper evenly and correctly 'over the top layer of plaster deposited by. the hydrator 6. Other rollers 44, parallel to the rollers 16 and-43 further pressthe paper 42 and the rest of the plaster board beneath the same into a close and compactunion and the plaster then becomes set and then passes forward with the belt 2 to the compressing and marking rollers 8 and give the board its final shape and-finish. The paper roller 45 is provided with a projection 46 whichcuts the board into slabs of a predetermined length, or merely marks the board as desired. convenience in handling and is not necessarily the final severing as will appear below.

The slabs of plaster board are separated from the ed es 18 in the following m'anmi :The rollers 9 are beveled rollers. The

standard 40 similarto the standard 20 and This marking is for the purpose of I beveled rollers 47 are set at'an angle as shown in Fig. 11, and the lower roller 48 has conical ends 'so that the edges of the belt 2 are bent down as shown, by the rollers 47. I All these rollers are mounted in the conventional way'so that a. detailed description of their mountings is unnecessary. If,

desired, the roller 48 may be omitted and the ends of the lower roller 13 beveled and the rollers 47 placed immediatelyabove the same as shown in Fig. 2. This isthe referred construction as it prevents the e ges "18 from. coming in contact with the plaster headset this is the case the belt may be run con tinuously. Otherwise it must be run intermittently to give the plaster sutlioient time to set.

The table 10 is a plain conveyer mounted as the conveyer 2 and the same in all respects except that it is preferably shorter and the thickened edges 18 are omitted. The forward run of this conveyer 10 is manually controlled and at a higher'speed 'than the conveyer 2 so that theslabs which have been severed are drawn forward rapidl by turnin the wheel 50 which is provi ed with a andle 51 for this purpose. This wheel 50 is fixed to a shaft 52 to which is fixed a gear 53 meshin with a pinion 54 which is fixed to a sha 55 to which is also fixed a frame 56 which carries the conveyer 10 on its periphery. When each slab is fed to its proper position it is severed by the saw 11 mounted on a suitable arm 5 guided by parallel guides 58 and pivoted at its upper end by a pin 59 held in a bracket 60 in any suitable manner. The saw 11 may be driven by an suitable means, as an electric motor 61, and is given a sufiicient diameter to permit the saw to out clean through the slab from edge to edge without having the motor 61 come in contact with :its upper surface. If desired the arm 57 may be made telescopic for this purpose. The table 12 -is provided with suitable rollers 62 driven by gears 63 which in turn are driven by a crank 64 or other suitable means in the same manner as the gears 53' and 54, above described. The

table 12 is also provided with a suitablestop 65 which is set in accordance with the length of the slab to be severed, the distance from the stop 65 to the saw -11 being the length of the slab. From the hand driven rollers 62 the severed slab passes to the power driven rollers or other suitable con- 1 veyers which carry it as desired.

11 view of the foregoing the o eration of my improved plaster board will e readiliy understood. Assuming that the parts 0 the machineare 'as shown in Figs. 1 and 2, paper from the roller 19 is first run under the plaster supplying conveyer 4 which conveys the plaster on said paper as above described. The paper and'plaster then pass by the table 5, where fiber is placed on the p aster and then the paper with its supply of laster and fiber is then fed to the secon plaster-su plying means 6 where a second supply 0 plaster; is had, as above described, then the paper with its load passes to a second paper supplying device 7 and thence under the marking and pressing rolls 8 and 44 ,to the rolls 9 and from thene to the table 10 where the slabs are severed with the aid of the saw 11 and passes away from descm ed.

supply of the water The structure shown in Fig. 19 is a modified mechanism which is the same as the mixer shown in Fig. 9, except that the dispensed with and a corrugated roller substituted in lieu thereof. This roller is mounted in suitable bearings 71 on the frame 22 and is reached by means of a pulley 72 on the shaft 73 of the roller 70. This pulley 72 may be driven by any suitable means, not shown. The rotation of this corrugated roller 70 will distribute the plaster evenly over the belt 4.

' It is obvious that my invention in the present instance is in no wise restricted to the carrying out of the same by the exact form of apparatus above described but is broad enough to cover all methods that ..come within the scope of the annexed claims.

What I claim is 1. In the manufacture of plaster board the steps which consist in maintaining a flexible belt conveyer in constant motion with a part of its upper'run in a troughlike shape, supplying thereto uniformly plaster and water, and controlling the supply of the water by its depth on the con veyer thereby keeping the supply uniformly constant.

2. The herein described method of forming plaster board which consists in maintaining a flexible belt conveyer in constant motion with a part of its upper run in a trough-like shape, supplying thereto uniformly plaster and water, controlling the supply of the water by its depth on the conveyer thereby keeping the supply uhiformlyconstantt and su-pplylng paper to a second fconveyer, depositing the hydrated plaster oh the paper on the said second conveyer and then 7 feeding said plaster and paper forward. I

'3. The herein described method of formplaster board which consists in main- -taming a flexible belt conveyor in constant motion with a part of its upper run 1n a trough-like shape, supplying. thereto umforinly plaster and water, controlling the supply of the water by its depth on the conveyer thereby kee ing the supply umformly constant, supp yin paper to a second conveyer, depositin t e hydrated'plaster on the paper on t e said second conveyer, .feeding said plaster and paper forward and then supplyingfiber upon said hydrated laster. I

4. The erein described method of form ingplaster board which consists in maintaining a flexible belt conveyer in constant motion with a part trough-like shape, formly plaster and of its upper run ina supplying thereto uniwater, controlling the by its depth on the conveyer. thereby keeping the supply uniformly constant, supplyinglpaper to a second conveyer, depositing the hydrated plaster on the paper on the said second conveyer, feeding said plaster and pa er forward, then supplying fiber upon sei hydrated plaster, distributing the fiber evenly over said plaster, and then supplyin hydrated plaster upon t e fiber.

5. The herein described method of forming plaster board which consists in maintraining a flexible belt conveyer in constant motion With a partof its upper run in a trough-like shape, supplying thereto uniformly plaster and Water, controlling the supply of the Water by its depth on the conveyer thereby keeping the supply uniformly constant, supplying paper to a second con- 3 second coat of needles veyer, depositing the hydrated plaster on the pa/ er on the said second conveyer, feeding sand plaster and paper forward then supplying fiber. upon said .hydrated plaster,

distributing the fiber evenly over said plas- 5th day of June, 1909.

GEO; R. KING. Witnesses:

JOHN CosTnLLo, v THOMAS MGCORMAGK. 

